beyond a reasonable doubt
adj. part of jury instructions in all criminal trials, in which the jurors are told that they can only find the defendant guilty if they are convinced "beyond a reason- able doubt" of his or her guilt. Sometimes referred to as "to a moral certainty," the phrase is fraught with uncertainty as to meaning, but try: "you better be damned sure." By comparison it is meant to be a tougher standard than "preponderance of the evidence," used as a test to give judgment to a plaintiff in a civil (non-criminal) case.